Mineral Evolution Database
Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.
Mineral locality data provided by mindat.org



The Mineral Evolution database is currently under development.

The goal of this page is to present localities at which the mineral is found, and estimates of the oldest possible geologic age of the minerals at these localities.


Locality Name:
Caldbeck Fells Mining Region, Cumbria, England, UK

Oldest recorded age at locality: 391
Youngest recorded age at locality: 178

mindat Locality ID: 1418
mindat URL: http://www.mindat.org/loc-1418.html

Tectonic Settings:

Total number of sublocalities beneath "Caldbeck Fells Mining Region, Cumbria, England, UK": 0
Total number of bottom-level sublocalities: 0

Latitude: 0°0'0"N
Longitude: 0°0'0"E
Decimal Degree (lat, lon): 0,0
AThis mineral is Anthropogenic.
GThis mineral is directly dated.
BThis mineral is reported as having this age.
YThis mineral is using an age reported as an element mineralization period.
OThis mineral is using an age calculated from all data at the locality.
RThe age displayed for this mineral originates from a different, non-child locality.
PThe age displayed for this mineral is the range of ages for this mineral at all of this locality's children.
This mineral's age has not yet been recorded.

This Mineral list contains entries from this locality, including sub-localities. Minerals in bold are reported by mindat.org as occurring directly at this locality, and do not occur at any children (sublocalities) of this locality.

Elements at this locality, including sub-localities: Ag Al As Au Ba Be Bi C Ca Cl Co Cu F Fe H Hg K Mg Mn Mo Na Nb O P Pb S Sb Si Sn Te Ti U V W Zn Zr 

Elements from minerals reported directly at this locality: Ag Al As Au Ba Be Bi C Ca Cl Co Cu F Fe H Hg K Mg Mn Mo Na Nb O P Pb S Sb Si Sn Te Ti U V W Zn Zr 

Structural Groups for minerals in this locality: 
AcanthiteAdeliteAllophaneAluniteAmphiboleAndalusiteApatiteAragoniteArsenicArseniosiderite
ArsenoliteArsenopyriteAtacamiteBaryteBerauniteBerthieriteBerylBismutiteBournoniteBrackebuschite
BrochantiteBrookiteCalciteCaledoniteCarminiteCarpholiteChalcophylliteChalcopyriteChenevixiteClay
ClinozoisiteColumbiteCopperCoronaditeCorundumCovelliteCubaniteCyanotrichiteDescloiziteDevilline
DiasporeDigeniteDufréniteEpidoteFeldsparFluoriteGypsumKaoliniteLöllingiteLinarite
MalachiteMarcasiteMeneghiniteMicaMolybdeniteNickelineNoneNot in a structural groupPalygorskitePharmacosiderite
PhilipsburgitePlancheitePyritePyrochloreQuartzRockbridgeiteRocksaltRutileScheeliteSphalerite
SpinelStibniteSulphurSymplesiteTetradymiteTetrahedriteTitaniteTungstiteTurquoiseTyrolite
VivianiteWurtziteZinkeniteZircon

172 IMA Minerals at location:
Acanthite  (*)Adamite  (*)Aikinite  (*)Albite  (*)Allophane  (*)
Alunite  (*)Anatase  (*)Andalusite  (*)Anglesite  (*)Ankerite  (*)
Antimony  (*)Antlerite  (*)Aragonite  (*)Arseniosiderite  (*)Arsenopyrite  (*)
Atacamite  (*)Aurichalcite  (*)Azurite  (*)Baryte  (*)Bayldonite  (*)
Beaverite-(Cu)  (*)Beraunite  (*)Berthierite  (*)Beryl  (*)Beudantite  (*)
Bindheimite  (*)Bismite  (*)Bismuth  (*)Bismuthinite  (*)Bismutite  (*)
Bornite  (*)Boulangerite  (*)Bournonite  (*)Brochantite  (*)Brookite  (*)
Cacoxenite  (*)Calcite  (*)Caledonite  (*)Carminite  (*)Carpholite  (*)
Cassiterite  (*)Cerussite  (*)Chalcocite  (*)Chalcophyllite  (*)Chalcopyrite  (*)
Chenevixite  (*)Chlorargyrite  (*)Chrysocolla  (*)Cinnabar  (*)Columbite-(Mn)  (*)
Conichalcite  (*)Copper  (*)Cordierite  (*)Corkite  (*)Cornubite  (*)
Cornwallite  (*)Coronadite  (*)Cosalite  (*)Covellite  (*)Cubanite  (*)
Cuprite  (*)Cyanotrichite  (*)Descloizite  (*)Devilline  (*)Digenite  (*)
Dioptase  (*)Djurleite  (*)Dolomite  (*)Dufrénite  (*)Duftite  (*)
Elyite  (*)Epidote  (*)Erythrite  (*)Ferrimolybdite  (*)Fluorite  (*)
Fülöppite  (*)Galena  (*)Goethite  (*)Gold  (*)Gypsum  (*)
Hedleyite  (*)Hedyphane  (*)Hematite  (*)Hemimorphite  (*)Hinsdalite  (*)
Hisingerite  (*)Hübnerite  (*)Hydrocerussite  (*)Hydrozincite  (*)Ilmenite  (*)
Ingodite  (*)Jamesonite  (*)Jarosite  (*)Joséite-A  (*)Joséite-B  (*)
Kaolinite  (*)Krupkaite  (*)Lanarkite  (*)Langite  (*)Leadhillite  (*)
Libethenite  (*)Linarite  (*)Lindgrenite  (*)Löllingite  (*)Macphersonite  (*)
Magnetite  (*)Malachite  (*)Manganite  (*)Marcasite  (*)Mattheddleite  (*)
Metavivianite  (*)Microcline  (*)Mimetite  (*)Molybdenite  (*)Mottramite  (*)
Muscovite  (*)Orthoclase  (*)Palygorskite  (*)Pharmacosiderite  (*)Philipsburgite  (*)
Phosgenite  (*)Pitticite  (*)Plancheite  (*)Plumbogummite  (*)Plumbojarosite  (*)
Posnjakite  (*)Powellite  (*)Pseudomalachite  (*)Pyrite  (*)Pyrolusite  (*)
Pyromorphite  (*)Pyrrhotite  (*)Quartz  (*)Queitite  (*)Rockbridgeite  (*)
Romanèchite  (*)Rosasite  (*)Rutile  (*)Scheelite  (*)Schultenite  (*)
Scorodite  (*)Scotlandite  (*)Semseyite  (*)Senarmontite  (*)Serpierite  (*)
Silver  (*)Smithsonite  (*)Sphalerite  (*)Stibiconite  (*)Stibnite  (*)
Stolzite  (*)Strengite  (*)Sulphur  (*)Susannite  (*)Symplesite  (*)
Tennantite-(Fe)  (*)Tenorite  (*)Tetrahedrite-(Zn)  (*)Titanite  (*)Tremolite  (*)
Tsumebite  (*)Tungstite  (*)Turquoise  (*)Tyrolite  (*)Uraninite  (*)
Vanadinite  (*)Vivianite  (*)Witherite  (*)Wroewolfeite  (*)Wulfenite  (*)
Zinkenite  (*)Zircon  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Acanthite  (*)AcanthiteAg2S39136602793
Adamite  (*)AndalusiteZn2(AsO4)(OH)3913660254
Aikinite  (*)MeneghiniteCuPbBiS33913660315
Albite  (*)FeldsparNa(AlSi3O8)39136608803
Allophane  (*)AllophaneAl2O3(SiO2)1.3-2.0·2.5-3.0H2O3913660470
Alunite  (*)NoneKAl3(SO4)2(OH)63913660966
Anatase  (*)Not in a structural groupTiO239136602162
Andalusite  (*)AndalusiteAl2SiO539136601310
Anglesite  (*)BarytePb(SO4)39136602734
Ankerite  (*)NoneCa(Fe2+,Mg)(CO3)239136603092
Antimony  (*)ArsenicSb3913660363
Antlerite  (*)Not in a structural groupCu2+3(SO4)(OH)43913660246
Aragonite  (*)AragoniteCa(CO3)39136603250
Arseniosiderite  (*)ArseniosideriteCa2Fe3+3O2(AsO4)3·3H2O3913660194
Arsenopyrite  (*)ArsenopyriteFeAsS39136609052
Atacamite  (*)AtacamiteCu2Cl(OH)33913660544
Aurichalcite  (*)None(Zn,Cu)5(CO3)2(OH)63913660919
Azurite  (*)Not in a structural groupCu3(CO3)2(OH)239136605509
Baryte  (*)BaryteBa(SO4)391366011547
Bayldonite  (*)NoneCu3PbO(AsO3OH)2(OH)23913660172
Beaverite-(Cu)  (*)AlunitePb(Fe3+2Cu)(SO4)2(OH)63913660132
Beraunite  (*)BerauniteFe3+6(PO4)4O(OH)4·6H2O3913660136
Berthierite  (*)BerthieriteFeSb2S43913660343
Beryl  (*)BerylBe3Al2Si6O1839136604286
Beudantite  (*)AlunitePbFe3+3(AsO4)(SO4)(OH)63913660413
Bindheimite  (*)PyrochlorePb2Sb5+2O73913660450
Bismite  (*)NoneBi2O33913660214
Bismuth  (*)ArsenicBi39136601966
Bismuthinite  (*)StibniteBi2S339136601935
Bismutite  (*)BismutiteBi2O2(CO3)3913660716
Bornite  (*)NoneCu5FeS439136605516
Boulangerite  (*)NonePb5Sb4S113913660843
Bournonite  (*)BournoniteCuPbSbS339136601089
Brochantite  (*)BrochantiteCu4(SO4)(OH)639136601633
Brookite  (*)BrookiteTiO23913660700
Cacoxenite  (*)NoneFe3+24AlO6(PO4)17(OH)12·75H2O3913660280
Calcite  (*)CalciteCa(CO3)391366027770
Caledonite  (*)CaledoniteCu2Pb5(SO4)3(CO3)(OH)63913660359
Carminite  (*)CarminitePbFe3+2(AsO4)2(OH)23913660178
Carpholite  (*)CarpholiteMn2+Al2Si2O6(OH)4391366025
Cassiterite  (*)RutileSnO239136605171
Cerussite  (*)AragonitePb(CO3)39136604979
Chalcocite  (*)NoneCu2S39136605707
Chalcophyllite  (*)ChalcophylliteCu18Al2(AsO4)4(SO4)3(OH)24·36H2O3913660194
Chalcopyrite  (*)ChalcopyriteCuFeS2391366027198
Chenevixite  (*)ChenevixiteCuFe3+(AsO4)(OH)2391366090
Chlorargyrite  (*)RocksaltAgCl39136601382
Chrysocolla  (*)Allophane(Cu2-xAlx)H2-xSi2O5(OH)4·nH2O39136603531
Cinnabar  (*)NoneHgS39136602600
Columbite-(Mn)  (*)ColumbiteMn2+Nb2O63913660289
Conichalcite  (*)AdeliteCaCu(AsO4)(OH)3913660363
Copper  (*)CopperCu39136603846
Cordierite  (*)BerylMg2Al4Si5O1839136601008
Corkite  (*)AlunitePbFe3+3(SO4)(PO4)(OH)63913660151
Cornubite  (*)NoneCu5(AsO4)2(OH)43913660109
Cornwallite  (*)NoneCu5(AsO4)2(OH)43913660175
Coronadite  (*)CoronaditePb(Mn4+6Mn3+2)O163913660227
Cosalite  (*)NonePb2Bi2S53913660344
Covellite  (*)CovelliteCuS39136604165
Cubanite  (*)Cubanite WurtziteCuFe2S33913660802
Cuprite  (*)Not in a structural groupCu2O39136602970
Cyanotrichite  (*)CyanotrichiteCu4Al2(SO4)(OH)12(H2O)23913660179
Descloizite  (*)DescloizitePbZn(VO4)(OH)3913660378
Devilline  (*)DevillineCaCu4(SO4)2(OH)6·3H2O3913660366
Digenite  (*)DigeniteCu1.8S39136601027
Dioptase  (*)NoneCuSiO3·H2O3913660164
Djurleite  (*)NoneCu31S163913660300
Dolomite  (*)NoneCaMg(CO3)239136609895
Dufrénite  (*)DufréniteCa0.5Fe2+Fe3+5(PO4)4(OH)6·2H2O3913660139
Duftite  (*)AdelitePbCu(AsO4)(OH)3913660220
Elyite  (*)NoneCuPb4(SO4)O2(OH)4·H2O391366085
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)39136608173
Erythrite  (*)VivianiteCo3(AsO4)2·8H2O3913660814
Ferrimolybdite  (*)NoneFe3+2(Mo6+O4)3·7H2O3913660345
Fluorite  (*)FluoriteCaF239136609617
Fülöppite  (*)NonePb3Sb8S15391366055
Galena  (*)RocksaltPbS391366024243
Goethite  (*)DiasporeFeO(OH)39136607437
Gold  (*)CopperAu391366030554
Gypsum  (*)GypsumCa(SO4)·2H2O39136606890
Hedleyite  (*)TetradymiteBi7Te33913660104
Hedyphane  (*)ApatiteCa2Pb3(AsO4)3Cl391366048
Hematite  (*)CorundumFe2O3391366014640
Hemimorphite  (*)Not in a structural groupZn4(Si2O7)(OH)2·H2O39136601689
Hinsdalite  (*)AlunitePbAl3(SO4)(PO4)(OH)6391366082
Hisingerite  (*)Kaolinite ClayFe2Si2O5(OH)4·2H2O3913660144
Hübnerite  (*)ColumbiteMn2+(WO4)3913660469
Hydrocerussite  (*)NonePb3(CO3)2(OH)23913660201
Hydrozincite  (*)NoneZn5(CO3)2(OH)639136601066
Ilmenite  (*)CorundumFe2+Ti4+O339136605433
Ingodite  (*)TetradymiteBi2TeS391366030
Jamesonite  (*)NonePb4FeSb6S143913660784
Jarosite  (*)AluniteKFe3+3(SO4)2(OH)639136602228
Joséite-A  (*)TetradymiteBi4TeS2391366050
Joséite-B  (*)TetradymiteBi4Te2S391366086
Kaolinite  (*)Clay KaoliniteAl2Si2O5(OH)439136605591
Krupkaite  (*)MeneghinitePbCuBi3S6391366080
Lanarkite  (*)NonePb2O(SO4)391366097
Langite  (*)NoneCu4(SO4)(OH)6·2H2O3913660593
Leadhillite  (*)NonePb4(SO4)(CO3)2(OH)23913660265
Libethenite  (*)AndalusiteCu2(PO4)(OH)3913660234
Linarite  (*)LinariteCuPb(SO4)(OH)23913660987
Lindgrenite  (*)NoneCu3(Mo6+O4)2(OH)2391366021
Löllingite  (*)LöllingiteFeAs23913660762
Macphersonite  (*)NonePb4(SO4)(CO3)2(OH)2391366011
Magnetite  (*)SpinelFe2+Fe3+2O4391366014899
Malachite  (*)MalachiteCu2(CO3)(OH)2391366012537
Manganite  (*)RutileMn3+O(OH)3913660770
Marcasite  (*)MarcasiteFeS239136605674
Mattheddleite  (*)ApatitePb5(SiO4)1.5(SO4)1.5Cl391366032
Metavivianite  (*)SymplesiteFe2+Fe3+2(PO4)2(OH)2·6H2O391366026
Microcline  (*)FeldsparK(AlSi3O8)39136604924
Mimetite  (*)ApatitePb5(AsO4)3Cl39136601107
Molybdenite  (*)MolybdeniteMoS239136605800
Mottramite  (*)DescloizitePbCu(VO4)(OH)3913660362
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2391366017380
Orthoclase  (*)FeldsparK(AlSi3O8)39136602349
Palygorskite  (*)Palygorskite Clay(Mg,Al)2Si4O10(OH)·4H2O3913660306
Pharmacosiderite  (*)PharmacosideriteKFe3+4(AsO4)3(OH)4·6-7H2O3913660428
Philipsburgite  (*)PhilipsburgiteCu5Zn(AsO4)(PO4)(OH)6·H2O391366031
Phosgenite  (*)NonePb2(CO3)Cl23913660142
Pitticite  (*)None[Fe,AsO4,SO4,H2O] (?)3913660140
Plancheite  (*)PlancheiteCu8(Si4O11)2(OH)4·H2O391366074
Plumbogummite  (*)AlunitePbAl3(PO4)(PO3OH)(OH)63913660170
Plumbojarosite  (*)AlunitePb0.5Fe3+3(SO4)2(OH)63913660477
Posnjakite  (*)NoneCu4(SO4)(OH)6·H2O3913660309
Powellite  (*)ScheeliteCa(MoO4)3913660494
Pseudomalachite  (*)NoneCu5(PO4)2(OH)43913660369
Pyrite  (*)PyriteFeS2391366039462
Pyrolusite  (*)RutileMnO239136603106
Pyromorphite  (*)ApatitePb5(PO4)3Cl39136601725
Pyrrhotite  (*)NickelineFe7S839136609056
Quartz  (*)QuartzSiO2391366061156
Queitite  (*)NoneZn2Pb4(Si2O7)(SiO4)(SO4)39136607
Rockbridgeite  (*)Rockbridgeite(Fe2+0.5Fe3+0.5)2Fe3+3(PO4)3(OH)53913660206
Romanèchite  (*)None(Ba,H2O)2(Mn4+,Mn3+)5O103913660312
Rosasite  (*)MalachiteCuZn(CO3)(OH)23913660454
Rutile  (*)RutileTiO239136605614
Scheelite  (*)ScheeliteCa(WO4)39136604894
Schultenite  (*)NonePb(AsO3OH)391366030
Scorodite  (*)NoneFe3+(AsO4)·2H2O39136601153
Scotlandite  (*)NonePb(S4+O3)391366025
Semseyite  (*)NonePb9Sb8S213913660165
Senarmontite  (*)ArsenoliteSb2O33913660179
Serpierite  (*)DevillineCa(Cu,Zn)4(SO4)2(OH)6·3H2O3913660292
Silver  (*)CopperAg39136605186
Smithsonite  (*)CalciteZn(CO3)39136602473
Sphalerite  (*)SphaleriteZnS391366021482
Stibiconite  (*)PyrochloreSb3+Sb5+2O6(OH)3913660446
Stibnite  (*)StibniteSb2S339136603418
Stolzite  (*)ScheelitePb(WO4)3913660156
Strengite  (*)NoneFe3+(PO4)·2H2O3913660263
Sulphur  (*)SulphurS39136602045
Susannite  (*)NonePb4(SO4)(CO3)2(OH)2391366099
Symplesite  (*)SymplesiteFe2+3(AsO4)2·8H2O391366092
Tennantite-(Fe)  (*)TetrahedriteCu6(Cu4Fe2)As4S1339136601803
Tenorite  (*)NoneCuO39136601101
Tetrahedrite-(Zn)  (*)TetrahedriteCu6(Cu4Zn2)Sb4S1339136605317
Titanite  (*)TitaniteCaTi(SiO4)O39136604899
Tremolite  (*)Amphibole   Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)239136602562
Tsumebite  (*)BrackebuschitePb2Cu(PO4)(SO4)(OH)391366032
Tungstite  (*)TungstiteWO3·H2O3913660118
Turquoise  (*)TurquoiseCuAl6(PO4)4(OH)8·4H2O3913660484
Tyrolite  (*)TyroliteCa2Cu9(AsO4)4(CO3)(OH)8·11H2O3913660245
Uraninite  (*)FluoriteUO239136602718
Vanadinite  (*)ApatitePb5(VO4)3Cl3913660605
Vivianite  (*)VivianiteFe2+3(PO4)2·8H2O3913660636
Witherite  (*)AragoniteBa(CO3)3913660251
Wroewolfeite  (*)NoneCu4(SO4)(OH)6·2H2O391366095
Wulfenite  (*)ScheelitePbMoO439136601655
Zinkenite  (*)ZinkenitePb9Sb22S423913660228
Zircon  (*)ZirconZr(SiO4)39136605251


16 Ages assigned to this locality:

Excel IDMax Age (Ma)Min Age (Ma)Age as listed in referenceDating MethodAge InterpretPrioritized?Sample SourceSample NumRun NumAge from other LocalityDated MineralMinerals explicitely stated as having this ageAge applies to these ElementsMinDat Locality IDDated Locality (Max Age)Location as listed in referenceReferenceReference DOIReference IDAge Notes
JGS171_49_001245235245-235paleomagage of hematite deposit   YesHematite 25832Cumbria, England, UKCumbriaCrowley et al. (2014) JGS171_49 
Kristen000283236236 K-Ar illiteD1 Yes  1428Driggith Mine (Driggeth Mine), Caldbeck, Allerdale, Cumbria, England, UKDriggith MineIneson and Mitchell (1974)10.1017/S0016756800041571GM111_521 
Kristen000284239239 K-Ar illiteD2 Yes  1428Driggith Mine (Driggeth Mine), Caldbeck, Allerdale, Cumbria, England, UKDriggith MineIneson and Mitchell (1974)10.1017/S0016756800041571GM111_521 
Kristen000277241241 K-Ar illiteS1 Yes  1445Old Sandbed Mine (Old Sandbeds Mine), Caldbeck, Allerdale, Cumbria, England, UKSandbed MineIneson and Mitchell (1974)10.1017/S0016756800041571GM111_521 
Kristen000278263263 K-Ar illiteS2 Yes  1445Old Sandbed Mine (Old Sandbeds Mine), Caldbeck, Allerdale, Cumbria, England, UKSandbed MineIneson and Mitchell (1974)10.1017/S0016756800041571GM111_521 
Kristen000279272272 K-Ar illiteS3 Yes  1445Old Sandbed Mine (Old Sandbeds Mine), Caldbeck, Allerdale, Cumbria, England, UKSandbed MineIneson and Mitchell (1974)10.1017/S0016756800041571GM111_521 
Kristen000280243243 K-Ar illiteS4 Yes  1445Old Sandbed Mine (Old Sandbeds Mine), Caldbeck, Allerdale, Cumbria, England, UKSandbed MineIneson and Mitchell (1974)10.1017/S0016756800041571GM111_521 
Kristen000275249249 K-Ar illitePG1 Yes  4767Potts Gill Copper Mine, Potts Gill, Caldbeck, Allerdale, Cumbria, England, UKPotts Ghyll MineIneson and Mitchell (1974)10.1017/S0016756800041571GM111_521 
Kristen000276229229 K-Ar illitePG2 Yes  4767Potts Gill Copper Mine, Potts Gill, Caldbeck, Allerdale, Cumbria, England, UKPotts Ghyll MineIneson and Mitchell (1974)10.1017/S0016756800041571GM111_521 
Kristen000281178178 K-Ar illiteR1 Yes  1444Roughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UKRoughtongill MineIneson and Mitchell (1974)10.1017/S0016756800041571GM111_521 
Kristen000282189189 K-Ar illiteR2 Yes  1444Roughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UKRoughtongill MineIneson and Mitchell (1974)10.1017/S0016756800041571GM111_521 
Mo-00010391366 K-Ar, U-Pb muscovite, uraninite   Ferrimolybdite, Molybdenite, Powellite, WulfeniteMo1418Caldbeck Fells Mining Region, Cumbria, England, UKCaldbeckShepherd et al. (1976); Ball et al. (1985)   
Kristen000285197197 K-Ar illiteCF1 Yes  1425Carrock Mine, Mungrisdale, Eden, Cumbria, England, UKCarrock Fell MineIneson and Mitchell (1974)10.1017/S0016756800041571GM111_521 
Kristen000286231231 K-Ar illiteCF2 Yes  1425Carrock Mine, Mungrisdale, Eden, Cumbria, England, UKCarrock Fell MineIneson and Mitchell (1974)10.1017/S0016756800041571GM111_521 
Kristen000287282282 K-Ar illiteCF3 Yes  1425Carrock Mine, Mungrisdale, Eden, Cumbria, England, UKCarrock Fell MineIneson and Mitchell (1974)10.1017/S0016756800041571GM111_521 
Kristen000288231231 K-Ar illiteCF4 Yes  1425Carrock Mine, Mungrisdale, Eden, Cumbria, England, UKCarrock Fell MineIneson and Mitchell (1974)10.1017/S0016756800041571GM111_521 

SampleSource LocalityReference URL

All locality data graciously provided by mindat.org

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